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An EMB120 in climb at 14000 ft had an intermittent lavatory smoke alarm sounding which proved to be a false warning.
| Attributes | |
| ACN | 398209 |
| Time | |
| Date | 199803 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pit |
| State Reference | PA |
| Altitude | msl bound lower : 10000 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : zob |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 5900 flight time type : 3900 |
| ASRS Report | 398209 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Working flight from pit climbing through 10000 ft, smoke alarm sounded intermittently. FAA jump seater on jump seat. Flight attendant confirmed no smoke, fire or heat. Trash can was empty. We were in continuous light to moderate chop. Instructed flight attendant to see if press-to-test was somehow stuck or pushed in partially. First officer continued to fly the aircraft and we broke out of turbulence. The warning went silent and remained so for remaining flight to the destination. The passenger were given a normal briefing WX at destination, etc, and kept seat belt sign on due to the turbulence in the area. I elected to not make a blanket PA announcement as not everyone was aware of the event and I did not want to create unnecessary emotional stress. The flight attendant informed those individuals that made inquiries on a one-on-one basis and no one seemed alarmed.
Original NASA ASRS Text
Title: AN EMB120 IN CLB AT 14000 FT HAD AN INTERMITTENT LAVATORY SMOKE ALARM SOUNDING WHICH PROVED TO BE A FALSE WARNING.
Narrative: WORKING FLT FROM PIT CLBING THROUGH 10000 FT, SMOKE ALARM SOUNDED INTERMITTENTLY. FAA JUMP SEATER ON JUMP SEAT. FLT ATTENDANT CONFIRMED NO SMOKE, FIRE OR HEAT. TRASH CAN WAS EMPTY. WE WERE IN CONTINUOUS LIGHT TO MODERATE CHOP. INSTRUCTED FLT ATTENDANT TO SEE IF PRESS-TO-TEST WAS SOMEHOW STUCK OR PUSHED IN PARTIALLY. FO CONTINUED TO FLY THE ACFT AND WE BROKE OUT OF TURB. THE WARNING WENT SILENT AND REMAINED SO FOR REMAINING FLT TO THE DEST. THE PAX WERE GIVEN A NORMAL BRIEFING WX AT DEST, ETC, AND KEPT SEAT BELT SIGN ON DUE TO THE TURB IN THE AREA. I ELECTED TO NOT MAKE A BLANKET PA ANNOUNCEMENT AS NOT EVERYONE WAS AWARE OF THE EVENT AND I DID NOT WANT TO CREATE UNNECESSARY EMOTIONAL STRESS. THE FLT ATTENDANT INFORMED THOSE INDIVIDUALS THAT MADE INQUIRIES ON A ONE-ON-ONE BASIS AND NO ONE SEEMED ALARMED.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.